Pool covering system



FIG. 1 is a perspective view of a pool covering system showing my new design;

FIG. 2 is an exploded perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof (back view is mirror image); and,

FIG. 6 is a side view thereof (opposite side view is mirror image).

In FIG. 1, the broken lines showing of environmental structure for purposes of illustrating the pool covering system in a condition of use. The broken lines and the structure they depict form no part of the claimed design. 

The ornamental design for a pool covering system, as shown and described. 